please help. for the letter D the options are a. yes, since we reject HOb. yes, since we do not reject HOc. No, since we reject HOd. No, since we do not reject HO

Based on the average predictions of 45 economists, the U.S. gross domestic product (GDP) will expand by 2.5% this year. Suppose the sample standard deviation of their predictions was 2%. At the 1% significance level, test if the mean forecast GDP of all economists is less than 3%. (You may find it useful to reference the t table.) a. Select the null and the alternative hypotheses. O HO: M = 3; HA: M # 3 O HO : M S 3 ; HA : M > 3 O HO: M 2 3; HA: M